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PHP Date Exercises : Get yesterday's date

PHP date: Exercise-13 with Solution

Write a PHP script to get yesterday's date.

Sample Solution:

PHP Code:

<?php
$dt = new DateTime();
$dt->sub(new DateInterval('P1D'));
echo $dt->format('F j, Y')."\n";
?>

Sample Output:

July 10, 2017

N.B.: The result may varry for your system date and time.

Flowchart :

Flowchart: Get yesterday's date

PHP Code Editor:

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Previous: Write a PHP script to change month number to month name.
Next: Write a PHP script to get the current date/time of 'Australia/Melbourne'.

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PHP: Tips of the Day

SQL injection that gets around mysql_real_escape_string()

Consider the following query:

$iId = mysql_real_escape_string("1 OR 1=1");    
$sSql = "SELECT * FROM table WHERE id = $iId";

mysql_real_escape_string() will not protect you against this. The fact that you use single quotes (' ') around your variables inside your query is what protects you against this. The following is also an option:

$iId = (int)"1 OR 1=1";
$sSql = "SELECT * FROM table WHERE id = $iId";

Ref : https://bit.ly/32q3bJ7